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Properties of substance:

sodium phosphate dodecahydrate


Physical appearance:

colorless crystals

Empirical formula (Hill's system):

H24Na3O16P

Structural formula:

Na3PO4 · 12H2O

Molar/atomic mass: 380.12

Melting point (°C):

73.4

Destruction point (°C):

100

Solubility (g/100 g of solvent):

water: 28.3 (20°C)
carbon disulphide: insoluble
ethanol: insoluble

Density:

1.64 (20°C, g/cm3)

Standard molar enthalpy (heat) of formation ΔfH0 (298.15 K, kJ/mol):

-5480 (s)

Standard molar entropy S0 (298.15 K, J/mol·K):

660 (s)

Molar heat capacity at constant pressure Cp (298.15 K, J/mol·K):

665 (s)

    References:

    1. Ефимов А.И. и др. Свойства неорганических соединений. Справочник. - Л.: Химия, 1983. - pp. 168-169
    2. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 85
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      © Collected Kiper Ruslan Anatolievich